Ship ES6 block scoping.

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index 5bb639a1d1a9e25e271d3aa3f9270c1a2f5e18ee..3038c135f845767cbb9c37e780673c2e13dac38e 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -188,13 +188,13 @@ DEFINE_IMPLICATION(es_staging, harmony)
     "harmony classes (implies block scoping & object literal extension)") \
   V(harmony_object_literals, "harmony object literal extensions")         \
   V(harmony_tostring, "harmony toString")                                 \
-  V(harmony_scoping, "harmony block scoping")                             \
   V(harmony_templates, "harmony template literals")
 
 // Features that are shipping (turned on by default, but internal flag remains).
 #define HARMONY_SHIPPING(V)                               \
   V(harmony_numeric_literals, "harmony numeric literals") \
-  V(harmony_strings, "harmony string methods")
+  V(harmony_strings, "harmony string methods")            \
+  V(harmony_scoping, "harmony block scoping")
 
 // Once a shipping feature has proved stable in the wild, it will be dropped
 // from HARMONY_SHIPPING, all occurrences of the FLAG_ variable are removed,